Ferroelectric composition

ABSTRACT

AN IMPROVED SOLID STATE SWITCH OR MULTI-STATE MEMORY IS COMPOSED OF AN ELECTRODED BLOCK OF A SOLID SOLUTION OF LEAD ZIRCONATE TITANATE WITH LANTHANUM FERRITE, WITH THE SUBSTITUTION OF A DONOR ADDITIVE IN THE A OR B POSITION OF THE PEROVSKITE LATTICE. FOR EXAMPLE, ANTIMONY IS SUBSTITUTED FOR A PORTION OF THE ZIRCONIUM OR A PORTION OF THE TITANIUM, OR A TRIVALENT ATOM IS SUBSTITUTED FOR A PORTION OF THE LEAD. A TYPICAL COMPOSITION IS:   (PB99SB.02(ZR.66TI.34).98O3)0.9(LAFEO3)0.1   THE IMPROVED COMPOSITION GIVES MORE FAVORABLE SWITCHING CHARACTERISTICS BOTH WITH RESPECT TO SPEED AND THE NUMBER OF TIMES SATISFACTORY SWITCHING IS OBTAINED AND LITTLE OR NO DEGRADUATION TAKES PLACE.

 

